Closure member for sheet-metal containers



C. T. DRAPER.

CLOSURE MEMBER -FOR SHEET METAL CONTAINERS. APPLICATION FILED APR. 9, 1911.

1,4E36,2,1L mm Novo 211 1922..

, Fctenteel Nova 21,; 12 3222 *unrrnnf srnrns Parent orator...

CHAEELTJS Cl. IDEAPER, CLEVELAND, OEZEU, ASSIGNQR T THE IDEAPER EAHUZ AQ TUBING @QIEPAEJ'Y, @Zl CLEVELAND, QHIQ, A CQRIPQRATIQN @F @HZBO.

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, Application filled April e,

To all wizmn'tmap/-comer Be it known that Cnnnnns T. Deanne, a

, citizen of the United States, residing at Cleveland, in the county of Cuyahoga, and State of Ohio, has invented certain new and for sealing such containers, which means are highly eflicient and cheaply constructed.

The most common use for which my improvement is designed, is that of sealing sheet metal barrels or containers, but l have shown I a as one of the adaptations of my improvemerit, a sheet radiator equipped in accordance with myinvention. I

Referring to its use 1n connection with sheet metal barrels, this improvement secures a thoroughly eficient closure by rea son of the fact that the seal is eflected by .screw pressure upon the body portion of the barrel. Tnother words, the body portion is clamped, preferably with a gasket intervening, between screw-acting members positioned-respectively exteriorly and interiorly of the barrel, and there are no seams, joints or welds between the barrel body and its closure members, which otherwise would require liquid tight construction. Moreover, one of the-screw-acting members, which is interiorly positioned within the receptacle and therefore unsubjected to damage or displacement, is securely interlocked with the sheet metal body itself in order to afiord ample resistance to the torsion or strain of forcibly tightening the screw threads and sealing relation.

efi'ecting the exterior seal.

I may briefly describe the preferred construction in its simplest form, as comprising the perforated body portion of the sheet metal container, with which" an interiorly positioned tap ed crown or metallic ring, registering wit said perforation, is securely interlocked to hold the members in fixed relation. The seal or closure is efiected by an exterior, flanged screw-plu which takes within the tapped crown and 0 amps a gasket between its flange and the barrel body in The features of my improvement may be more readily explained in N17. serial Illa. 160,660

7 detail, by making reference to the "accompanyingdrawings, wherein lFlg. 1, is a view in perspective, showin. a sheet metal barrel or container equippe with my improvement. i

Fig. 2 is an enlar ed sectional view of the closure members of t e sheetmetal container. Figs. 3 and 4 are similar sectional views of the body portion and the tapped crown thereof respectively, and

lFig. 5 is a detail partially broken away and in section, illustrating radiator-sections thus equipped and connected together.

Throughout the several figures of the drawing, l have employed the same character of reference to indicate similar or equivalent parts.

Although l have shown containers, as ll may term the sheet metal barrel and radiator, equlpped with my improvements of identical characteristics, the structural features of my Invention are not necessarily confined to the details shown, nor to the uses indicated for the purpose of explanation. In Fig. 1 T have shown a sheet metal barrel a, the metallic head I) having two openings closed by screw caps or plugs 0 ol.

- Either or both of these may be constructed in accordance with my present invention, but the former. is intended or contemplated by the further description and drawing. Thus in Figs. 2, 3 and 4 the barrel body portion or head I) is slightly elevated at b about the perforation or opening cl andtheedges or ii ps bl' initially are downturned as shown in Fig. 4L illustrates in section, the tapped crown or ring 6, which conveniently may be a malleable casting having integral lugs or securing members e" peripherally arranged about its upper edge andadapted to be firmly interlocked beneath the lips b for the purpose of securing said ring firmly in posltion interiorly of the barrel, as shown: in Fig. 2. The screw plug f has a flange 7 which is adapted to bear upon the gasket 9' interposed between the elevated rim 6 and said flange 7. Accordingly, it will be seen that the seal is eifected directly between the screwacting members 6 and f, so that there is no dependence upon any seam or weld for making the container strictly liquid tight.

1 This feature will bebest appreciated by those who are conversant with the (art of manufacturing sheet -metal containers, and -particularly large containers such as are depositioned crown for seating the screw plug,

previously has involved a welded or overlapping joint between the body portlon and the crown, which of necessity must be llquld tiglit and thereby becomes ex ensive to manufacture. 'Moreover, the wel mg operation, not infrequently burns the sheet metal body portion, meaning its impairment through overheating by the oxy-acetylene flame. i

'All of this is avoided by the construction. herein explained, as well as the frequent warping of the ring caused by unequal and excessive heating, during welding. In assembling my closure members," the malleable casting e is trued between conforming dies, preferably, before it is used in the assembllng die to interlock the lugs ebeneath the inturned lips b of the body portion or head. As thus interlocked in said assembling die the inturned rim 1)" and the sheet metal seat are forcibly compressed so that the metal is very slightly thinned above and below the overturned lugs 6, between which are retaining indentations, so that the ring 0 is securely held against displacement/and all twisting or turning strains. When the members are thus assembled, as shown in Fig. 2, the ring maintains its initial and accurate shape and position with respect to the opening, so that the screw plug will fit accurately therein and secure an effective seal, dependent upon the pressure exerted by the screw-acting members' Thus the gas ket may safely be relied upon for efi'ecting the temporary sealing relation of the container equipped with my improvements. The body of the container preferably is slightly elevated about the opening, better to afford a broad, level annular seat for the screw-plug or gasket, directly upon the bodyportion. This is obtainable for the purpose of securing a most effective seal, throu h positioning the supporting ring beneath t e opening and wholly within the container.

Fig. 5 illustrates details of two sheet metal radiator sections it, h, fitted with my improved closure members, as an illustration or example of the further adaptation'o'f this invention. The members are of identical type;

the only difference of note being the substi tution of a threaded pipe-section t for the screw plug of the other figures, but the prin ciples and advantages of m improvements are retained. Other adaptatlons will readily occur to oneskilled in the art, and need not be specifically mentioned.

Having now described the preferred embodiment of my invention, and two distinct K modes of practically applyin it in use, I-

cl'aim and desire, to secure by letters Patent,

seal'with said annular seat, set forth. I

2. A closure for sheet-metal containers, comprising a circularly perforated wall of said container having its rim turned in-- wardly, a metallic ring provided with rigid indented engaging members interlocked with said rim and with a tapped-portion; all substantially registering wlth sa1d perfora' tion but positioned whollyinterior of the container, and a closure member having an enlarged headannularly extending above the interiorly positioned ring and screwing screwed into the tapped portion of the ring and effect an exterior substantially as into its tapped portion to effect an exterior seal with said container wall, substantially.

as set forth.

'3. A closure for sheet-metal containers,

comprising the perforated sheet-metal body portion, an annular securing crown positioned wholly within the interior of the container and registering substantially with said perforation; said crown having bendable portions rigidly interlocked with the perforated sheet-metal and fixedly securing it in position, and a flanged closure plug clampmg the body portion'in sealing relation between its flange "and the interior crown, substantialy as setforth.--

4. A closure for sheet-metal containers,

ios

comprising a circularly perforated wall of I said container having a revertin rim, a ring positloned wholly lnterlor of t e contalner and rigldly interlocked to sa1d reverting rim substantially in register with the perforated opening; the exterior of the opening being flattened to form aclosure seat, a gasket positioned upon the seat, a flanged closure member adapted to bear upon the gasket sealing relation immediately above the an nular edge of the opem'ng, and means for effecting its clamping engagement to effect an exterior seal, substantially as set forth. 5. The combination with the body portion of a sheet-metal container suitably perforated with an ingress opening, of a tapped malleable ring having peripheral spaced securing members integral therewith; the rim. of said opening and the securing memmanner bers being interlocked with the ring wholly interior of the container, a gasket bearing exteriorly of the opening, and a screw-plug taking within the ring and seating the gas ket upon the body portion in exterior sealing relation, substantially as set forth.

6. The combination with a sheet metal body portion having a round opening therein, of a malleable annular member having peripheral securing partsand a tapped portion approximately the diameter of the completed opening; the said peripheral securing parts and the rim of said opening being interlocked substantially in a horizontal plane above the tapped portion for securing the tapped annular member in place, and a flanged screw plug adapted to be inserted in the tapped annular member and clamp the body portion between it and its flange, substantially as set forth.

7. The combination with a sheet metal body portion of a container having a circular opening therein, of a malleable annular member having peripheral members interlocked with the sheet-metal and a tapped portion slightly less in diameter than the finished o ening; the body of the metal being slight y elevated to form a seat, and its rim about the opening and the securing the tapped annular member with its flange bearing upon the elevated annular seat formed from the body portion, substantially as set forth.

8. A sheet metal container having an opening for filling and emptying its contents formed in the body thereof, an interiorly positioned tapped annular member secured beneath said opening entirely within said container; its tapped portion being approximately the diameter of the completed opening in the body and its upper portion being securely interlocked with the rim of said opening, and a flanged screw plug adapted to be inserted in the tapped portion with its flange in sealing exterior engagement with the body portion of the container, substantially as set forth.

In testimony whereof I do now afizr my signature in the presence of two witnesses.

CHARLES 'r. DRAPER,

Witnesses J. C. TURNER, ALBERT LYNN LAWRENCE. 

